John crosby jenkins



No. 626,383. Patented June 6, I899.

' J. C. JENKINS.

BICYCLE REPAIR LINK.

(Application filed Feb. 16. 1899.)

(No Model.)

Mfr/asses lnvenfar Niinn STATES PATENT, UFFICE.

JOHN CROSBY JENKINS, OF TORONTO, CANADA, ASSIGNOR TO ALBERT BARTON CROSBY, OF SAME PLACE.

BICYCLE REPAIR-LINK.

SPECIFICATION forming part of Letters Patent No. 626,383, dated June 6, 1899.

Application filed February 16,1899. serial No- 705,723. (No model.)

To (LZZ whom it may concern:

Be it known that I, JOHN CROSBY JENKINS, a subject of the Queen of England, residing at Toronto, in the county of York and Province of Ontario, Dominion of Canada, have invented or discovered certain new and useful Inimovements in Bicycle Repair-Links; and I do hereby declare the following to be a full, clear, and exact description of the invention or dis covery, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming a part of this specification.

Figure l is a perspective view of five links of a bicycle-chain, showing the central blocklink broken. Fig. 2 is a View of the repairlink complete. Fig. 3 is a View of the said broken chain connected by the repair-link. Fig. 4 is a view of two repair-links joined together by a connecting-link. Fig. 5 is a perspective view of the connecting-link. Fig. 6 is a View of a broken chain repaired by means of two repair-links and a connecting-link.

This invention relates to bicycle repairlinks, and has for its object the production of a device by means of which a broken bicycle-chain can be quickly, easily, and substantially repaired by the rider himself or herself without the necessity of going to a repair-shop or the use of any tools.

The device is so simple that a child can manipulate it and so easily portable that it can be taken along by the rider without the slightest inconvenience.

To this end my invention consists in providing a link to take the place of the solid block-link and a connecting-1ink to be used in case the other link breaks or in case a rivet breaks.

Reference being made to the numerals on the drawings, 1 indicates a flat piece of springsteel or other suitable material bent to fit the lower part of the block-link, the ends of which piece of steel are bent upward nearly at right angles to the lower portion, as shown in Fig. 2.

2 indicates a flat yoke, with a hole or slot cut in each end for the purpose of connecting the ends of the said piece of spring-steel. One end of the spring-steel, which is bent upward, is put through the hole in one end of the yoke and bent over and downward, so as to form a hinge The other end of the said piece of spring-steel merely has the point bent outward at right angles, so as to form a catch or fastener to keep it in place when it is put into the slot in the other end of the said yoke.

Fig. 2 represents the repair-link ready for use. The end 5 of the fiat yoke 2 is detached from the end et of the piece of spring-steel and the yoke is raised up, it working on the hinge 3. Then in order to repair the disconnected chain caused by the breaking of the block-link 6, Fig. 1, the end 4 of the repairlink is put down between the two adjacent parts of link 7 and up between the similar parts of link 8 and is then sprung into the slot in the flat yoke 2, where it is detained by reason of the point being bent outward. The chain is then repaired, as shown in Fig. 3.

In case one or both parts of a link other than the block-link break, or in case a rivet break, I have recourse to a device. shown in Fig. 5, which consists of a square link and is used as a connecting-link to join together two of the said repair-links. (Shown in Fig. 4.) The slot in this connecting-lin k is of sufficient size as to allow the end 4 of the repair-link to be slipped through it.

In adjusting the connectinglink the ends 4 4 of the repair-links are put through the connecting-link and slipped around to the position shown in Fig. 4. The repair-links are then adjusted in a manner similar to that described for the adjustment of a single repair-link.

Fig. (5 shows the chain repaired by means of the connecting-link and the two repairlinks. i

I am aware that prior to my invention auxiliary links for sprocket-chains have been used having a convex central portion adapted to fit the concave part of the solid link. I

therefore do not claim such a combination ing-link having the slot 9, substantially as debroadly; but scribed. 10

What I do claim, and desire to secure by In testimony whereof I affix my signature Letters Patent, is. in presence of two witnesses.

5 In repair-links for bicycle-chains, the com- JOHN CROSBY JENKINS.

bination of two of the repair-links coinpris- Witnesses: ing the bent piece of spring-steel having the H. EOKARDT,

hinge 3, and the flat yoke 2, With the connect- D. A. WILLIAMSON. 

